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January 30, 2015

January 30, 2015

Posted by **Anonymous** on Tuesday, June 19, 2012 at 4:35pm.

- statistics -
**bobpursley**, Tuesday, June 19, 2012 at 6:21pm - statistics -
**MathGuru**, Tuesday, June 19, 2012 at 6:23pmYou will have to determine z-score (use a z-table with the information you are given), then use the z-score formula to find x (the length).

Z-score formula is this:

z = (x - mean)/sd

mean = 24.3

sd = 1.8

Once you find the z-score in the table, substitute the z-score and the data above into the formula and solve for x.

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